Shareholder Fees	Nov. 15, 2022 USD ($)
Government Obligations Fund \| First American Government Obligations Fund - Class A
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Annual Low Balance Account Fee (for accounts under $2,500)	$ 15
Government Obligations Fund \| First American Government Obligations Fund - Class D
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Government Obligations Fund \| First American Government Obligations Fund - Class P
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Government Obligations Fund \| First American Government Obligations Fund - Class T
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Government Obligations Fund \| First American Government Obligations Fund - Class U
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Government Obligations Fund \| First American Government Obligations Fund - Class V
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Government Obligations Fund \| First American Government Obligations Fund - Class X
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Government Obligations Fund \| First American Government Obligations Fund - Class Y
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Government Obligations Fund \| First American Government Obligations Fund - Class Z
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Prime Obligations Fund \| First American Retail Prime Obligations Fund - Class A
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Annual Low Balance Account Fee (for accounts under $2,500)	$ 15
Retail Prime Obligations Fund \| First American Retail Prime Obligations Fund - Class T
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Prime Obligations Fund \| First American Retail Prime Obligations Fund - Class V
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Prime Obligations Fund \| First American Retail Prime Obligations Fund - Class X
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Prime Obligations Fund \| First American Retail Prime Obligations Fund - Class Y
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Prime Obligations Fund \| First American Retail Prime Obligations Fund - Class Z
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Tax Free Obligations Fund \| First American Retail Tax Free Obligations Fund - Class A
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Annual Low Balance Account Fee (for accounts under $2,500)	$ 15
Retail Tax Free Obligations Fund \| First American Retail Tax Free Obligations Fund - Class T
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Tax Free Obligations Fund \| First American Retail Tax Free Obligations Fund - Class V
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Tax Free Obligations Fund \| First American Retail Tax Free Obligations Fund - Class Y
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Retail Tax Free Obligations Fund \| First American Retail Tax Free Obligations Fund - Class Z
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class A
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Annual Low Balance Account Fee (for accounts under $2,500)	$ 15
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class D
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class P
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class T
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class V
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class X
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class Y
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Treasury Obligations Fund \| First American Treasury Obligations Fund - Class Z
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
U.S. Treasury Money Market Fund \| First American U.S. Treasury Money Market Fund - Class A
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Annual Low Balance Account Fee (for accounts under $2,500)	$ 15
U.S. Treasury Money Market Fund \| First American U.S. Treasury Money Market Fund - Class D
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
U.S. Treasury Money Market Fund \| First American U.S. Treasury Money Market Fund - Class T
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
U.S. Treasury Money Market Fund \| First American U.S. Treasury Money Market Fund - Class V
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
U.S. Treasury Money Market Fund \| First American U.S. Treasury Money Market Fund - Class Y
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
U.S. Treasury Money Market Fund \| First American U.S. Treasury Money Market Fund - Class Z
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Institutional Prime Obligations Fund \| First American Institutional Prime Obligations Fund - Class T
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Institutional Prime Obligations Fund \| First American Institutional Prime Obligations Fund - Class V
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Institutional Prime Obligations Fund \| First American Institutional Prime Obligations Fund - Class Y
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none
Institutional Prime Obligations Fund \| First American Institutional Prime Obligations Fund - Class Z
Prospectus [Line Items]
Maximum Sales Charge (Load)	none
Maximum Deferred Sales Charge (Load)	none

Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 3
-Subsection table
-Paragraph 1
-Subparagraph 1

+ Details

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Namespace Prefix:	rr_
Data Type:	rr:NonNegativePure4Type
Balance Type:	na
Period Type:	duration

- Definition

Maximum Deferred Sales Charge (Load) (as a percentage of ____) "Maximum Deferred Sales Charge (Load)" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read "Maximum Sales Charge (Load)" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 3
-Subsection instructions
-Paragraph 2
-Subparagraph a
-Clause i

+ Details

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Namespace Prefix:	rr_
Data Type:	rr:NonNegativePure4Type
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- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A

+ Details

Name:	rr_ProspectusLineItems
Namespace Prefix:	rr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Other Expenses

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 3
-Subsection table
-Paragraph 1
-Subparagraph 10

+ Details

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Namespace Prefix:	rr_
Data Type:	rr:NonNegativeMonetaryType
Balance Type:	na
Period Type:	duration